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Title: Resonant enhancement of polymer-cell optostimulation by a plasmonic metasurface
Authors: Maity, Arijit
Perotto, Sara
Moschetta, Matteo
Hua, Huang
Sardar, Samim
Paternò, Giuseppe Maria
Tian, Jingyi
Klein, Maciej
Adamo, Giorgio
Lanzani, Guglielmo
Soci, Cesare
Keywords: Science::Physics
Issue Date: 2022
Source: Maity, A., Perotto, S., Moschetta, M., Hua, H., Sardar, S., Paternò, G. M., Tian, J., Klein, M., Adamo, G., Lanzani, G. & Soci, C. (2022). Resonant enhancement of polymer-cell optostimulation by a plasmonic metasurface. ACS Omega, 7(47), 42674-42680.
Project: 2018-T1-002- 040 
Journal: ACS Omega 
Abstract: Organic semiconductors have shown great potential as efficient bioelectronic materials. Specifically, photovoltaic polymers such as the workhorse poly(thiophene) derivatives, when stimulated with visible light, can depolarize neurons and generate action potentials, an effect that has been also employed for rescuing vision in blind rats. In this context, however, the coupling of such materials with optically resonant structures to enhance those photodriven biological effects is still in its infancy. Here, we employ the optical coupling between a nanostructured metasurface and poly(3-hexylthiophene) (P3HT) to improve the bioelectronic effects occurring upon photostimulation at the abiotic-biotic interface. In particular, we designed a spectrally tuned aluminum metasurface that can resonate with P3HT, hence augmenting the effective field experienced by the polymer. In turn, this leads to an 8-fold increase in invoked inward current in cells. This enhanced activation strategy could be useful to increase the effectiveness of P3HT-based prosthetic implants for degenerative retinal disorders.
ISSN: 2470-1343
DOI: 10.1021/acsomega.2c04812
Schools: School of Physical and Mathematical Sciences 
Research Centres: The Photonics Institute 
Centre for Disruptive Photonic Technologies (CDPT) 
Rights: © 2022 The Authors. Published by American Chemical Society. This is an open-access article distributed under the terms of the Creative Commons Attribution License.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SPMS Journal Articles

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